I'm disgusted... advice appreciated

I offered and got an invite to shoot a small concert event from the small theatre owner ( performs in one of the bands ) . there was about 6 performers playing that evening

I volunteered to shoot for free as a practice and also to see how my skills and newly acquired gear would fair.

i spend about 25 hrs on retouching some of the photos so far mostly from HER band, and now i got somewhat a hint thru someone else ( I guess she did not have the guts to tell me about her d..k move) that she specifically said she does not want any photos of her posted on my website.

That was very shady, after I gave them at least 40 photos to post of facebook, their website ,etc...

The whole main purpose from my side was to add some new portfolio in exchange for some photos.
I'm very ticked off to be very polite...

SO, if I decide to post some of her shots anyway, can she sue me ? I almost want to just to p. $$ her off . If I knew she's so shady I'd never bother.